This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 10 |
| 5 | 16 |
| 6 | 48 |
| 7 | 71 |
| 8 | 268 |
| 9 | 330 |
| 10 | 1000 |
| 11 | 1231 |
| 12 | 6472 |
| 13 | 6720 |
| 14 | 20176 |
| 15 | 25011 |
| 16 | 195472 |
| 17 | 200832 |
| 18 | 456300 |
| 19 | 637336 |
| 20 | 3419680 |
| 21 | 3506880 |
| 22 | 11221136 |
| 23 | 15481956 |
| 24 | 126112960 |
| 25 | 127885440 |
| 26 | 262860800 |
| 27 | 384418176 |
| 28 | 2000043808 |